yashsingh1/xdaforums huggingface dataset:
[Nook Color General] micksh:
I run CM7 from eMMC. But, I have quite a few apps moved to SD and I had slow Kingston 16GB class 4 card. A month ago apps started to hang up and freeze Nook. I moved apps back to eMMC and freezes stopped. Then I bought Sandisk 16GB class 4 couple of weeks ago, moved apps back to SD and no freezes since.

The Sandisk card I bought from Amazon, seller "Everything But Stromboli". It was listed as class 4 but there is no class indication on card. Well, sequential speed is OK for class 4 so I can't complain.

Below are my test results for both cards. Notice relative poor QD32 write scores for Sandisk. Still better than everything non-Sandisk but I guess it's the slowest Sandisk card in this thread. EDIT: just noticed some horrible Sandisk results on page 23, so it's not the slowest.

Random access speed is not guarantied, I new it since this http://xdaforums.com/showpost.php?p=13301053&postcount=19

Just so you know, next card you buy may not be as good as the best cards in this thread. I'm not sure if QD=32 speed is more important than QD=1, QD=1 still destroys any non-Sandisk card. But even if my card is relatively slow it made difference for Apps2SD. Don't know about CM7 on SD. I guess for apps on SD only random read speed matters, but for OS write speed must be important, QD=32 or 1.

Tested cards with two different card readers, results are similar:

Sandisk:
-----------------------------------------------------------------------
CrystalDiskMark 3.0 x64 (C) 2007-2010 hiyohiyo
Crystal Dew World : http://crystalmark.info/
-----------------------------------------------------------------------

Sequential Read : 20.771 MB/s
Sequential Write : 6.129 MB/s
Random Read 512KB : 20.081 MB/s
Random Write 512KB : 0.662 MB/s
Random Read 4KB (QD=1) : 2.995 MB/s [ 731.3 IOPS]
Random Write 4KB (QD=1) : 1.140 MB/s [ 278.4 IOPS]
Random Read 4KB (QD=32) : 2.901 MB/s [ 708.2 IOPS]
Random Write 4KB (QD=32) : 0.142 MB/s [ 34.6 IOPS]

Kingston:

Sequential Read : 16.775 MB/s
Sequential Write : 9.899 MB/s
Random Read 512KB : 16.410 MB/s
Random Write 512KB : 1.861 MB/s
Random Read 4KB (QD=1) : 3.191 MB/s [ 779.1 IOPS]
Random Write 4KB (QD=1) : 0.018 MB/s [ 4.4 IOPS]
Random Read 4KB (QD=32) : 3.941 MB/s [ 962.2 IOPS]
Random Write 4KB (QD=32) : 0.018 MB/s [ 4.4 IOPS]
[Nook Color General] xbpuck:
Another brand to try

Picked up an NC and walked across the parking lot to radio shack and grabbed the first 8Gb uSD card I saw and took it home. Followed VG's instructions and then added Dalgrin's OC kernel, all worked like a champ. Didn't think the card made a difference, until I picked up a PNY chip, which choked. That's when I found this thread. :D

My original card was a Gigaware 8Gb class 4 and here are the CDM numbers:

-----------------------------------------------------------------------

CrystalDiskMark 3.0.1 (C) 2007-2010 hiyohiyo

Crystal Dew World : crystalmark.info

-----------------------------------------------------------------------

* MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s]

Sequential Read : 10.602 MB/s

Sequential Write : 5.951 MB/s

Random Read 512KB : 10.489 MB/s

Random Write 512KB : 1.559 MB/s

Random Read 4KB (QD=1) : 2.881 MB/s [ 703.4 IOPS]

Random Write 4KB (QD=1) : 1.604 MB/s [ 391.6 IOPS]

Random Read 4KB (QD=32) : 2.757 MB/s [ 673.0 IOPS]

Random Write 4KB (QD=32) : 1.087 MB/s [ 265.3 IOPS]

Test : 50 MB [E: 0.0% (0.0/7554.9 MB)] (x5)

Date : 2011/07/10 13:02:50

OS : Windows XP Professional SP3 [5.1 Build 2600] (x86)

-----------------------------------------------------------------------

CrystalDiskMark 3.0.1 (C) 2007-2010 hiyohiyo

Crystal Dew World : crystalmark.info

-----------------------------------------------------------------------

* MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s]

Sequential Read : 10.622 MB/s

Sequential Write : 5.975 MB/s

Random Read 512KB : 10.474 MB/s

Random Write 512KB : 1.054 MB/s

Random Read 4KB (QD=1) : 2.711 MB/s [ 661.8 IOPS]

Random Write 4KB (QD=1) : 1.638 MB/s [ 399.9 IOPS]

Random Read 4KB (QD=32) : 2.638 MB/s [ 644.2 IOPS]

Random Write 4KB (QD=32) : 1.120 MB/s [ 273.5 IOPS]

Test : 100 MB [E: 0.0% (0.0/7554.9 MB)] (x5)

Date : 2011/07/10 13:14:27

OS : Windows XP Professional SP3 [5.1 Build 2600] (x86)

I picked up a second one and the numbers are similar. I think Gigaware is Radio Shack's house brand, but it offers an alternative. Have not tried the 16 or 32Gb sizes yet, my local store is out of them.

As always your mileage may vary,

Puck
[Nook Color General] luigig:
Too good to be true?

Got a SanDisk MicrosSDHC 32GB Class 4 from here: http://www.amazon.com/gp/product/B004MVMCTU (one of the few I found with a retail package matching the pictures in the SanDisk web site).

I installed the card in the Nook, connected the Nook to my laptop and run CrystalDiskMark 3.0.1 x64. This is the report I got:

-----------------------------------------------------------------------

CrystalDiskMark 3.0.1 x64 (C) 2007-2010 hiyohiyo

Crystal Dew World : http://crystalmark.info/

-----------------------------------------------------------------------

* MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s]

Sequential Read : 18.422 MB/s

Sequential Write : 8.362 MB/s

Random Read 512KB : 18.449 MB/s

Random Write 512KB : 5.682 MB/s

Random Read 4KB (QD=1) : 4.053 MB/s [ 989.4 IOPS]

Random Write 4KB (QD=1) : 3.619 MB/s [ 883.5 IOPS]

Random Read 4KB (QD=32) : 4.468 MB/s [ 1090.8 IOPS]

Random Write 4KB (QD=32) : 4.154 MB/s [ 1014.2 IOPS]

Test : 50 MB [G: 57.5% (17.1/29.7 GB)] (x5)

Date : 2011/07/10 15:55:34

OS : Windows 7 Ultimate Edition SP1 [6.1 Build 7601] (x64)

------------------------------------------------------------------------

Are not these values too good?

What did I do wrong?

Thanks!
[Nook Color General] luigig:
Did the test again with the SanDisk MicrosSDHC 32GB Class 4 but this time connected directly to the card reader of my Thinkpad.

I suppose the following results are more in line with the results published in the first page:

-----------------------------------------------------------------------

CrystalDiskMark 3.0.1 x64 (C) 2007-2010 hiyohiyo

Crystal Dew World : http://crystalmark.info/

-----------------------------------------------------------------------

* MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s]

Sequential Read : 11.974 MB/s

Sequential Write : 6.247 MB/s

Random Read 512KB : 11.833 MB/s

Random Write 512KB : 1.919 MB/s

Random Read 4KB (QD=1) : 3.248 MB/s [ 792.9 IOPS]

Random Write 4KB (QD=1) : 1.428 MB/s [ 348.6 IOPS]

Random Read 4KB (QD=32) : 2.886 MB/s [ 704.5 IOPS]

Random Write 4KB (QD=32) : 1.007 MB/s [ 245.8 IOPS]

Test : 50 MB [F: 57.5% (17.1/29.7 GB)] (x5)

Date : 2011/07/10 18:38:16

OS : Windows 7 Ultimate Edition SP1 [6.1 Build 7601] (x64)
[Nook Color General] micksh:
I just posted in General section referring to this thread.

http://xdaforums.com/showthread.php?p=15534224#post15534224

I don't think it's relevant only to Nook, seems to be pretty generic.
[Nook Color General] freonchill:
adding to the list

got it to store pictures for my wife's phone (non-android)

using sandisk imagemate 14in1, wintec microSD/SD adapter, win7 x64

wintec 4gb, class4, C04G

CrystalDiskMark 3.0.1 x64

Sequential Read : 19.323 MB/s

Sequential Write : 11.331 MB/s

Random Read 512KB : 18.952 MB/s

Random Write 512KB : 1.892 MB/s

Random Read 4KB (QD=1) : 3.439 MB/s [ 839.6 IOPS]

Random Write 4KB (QD=1) : 0.021 MB/s [ 5.0 IOPS]

Random Read 4KB (QD=32) : 4.020 MB/s [ 981.4 IOPS]

Random Write 4KB (QD=32) : 0.020 MB/s [ 4.8 IOPS]

super slow random write.

looks like ill go get that sandisk 8gb or 16gb card for the nook i just ordered
[Nook Color General] toddsts:
I'll chip in my results

So after getting a nook color I ordered a Kingston 8GB Class 4 off Amazon. Then before it even arrived I found this thread. :(. True to form the performance was horrible and truly painful when I tried to load CM7 on it. So I grabbed one of the Radio Shack deals but only after ordering from 'Everything but Stromboli' also on Amazon. Here are the results from CrystalDiskMark 3.0.1 x64:

RadioShack Sandisk 8GB CL4 (notice I'm running 9 cycles)

Sequential Read : 7.801 MB/s

Sequential Write : 5.076 MB/s

Random Read 512KB : 7.727 MB/s

Random Write 512KB : 1.948 MB/s

Random Read 4KB (QD=1) : 2.230 MB/s [ 544.4 IOPS]

Random Write 4KB (QD=1) : 1.284 MB/s [ 313.4 IOPS]

Random Read 4KB (QD=32) : 2.139 MB/s [ 522.2 IOPS]

Random Write 4KB (QD=32) : 1.053 MB/s [ 257.2 IOPS]

Test : 50 MB [F: 9.5% (11.0/115.8 MB)] (x9)

'Stromboli' Sandisk 8GB CL4

Sequential Read : 13.537 MB/s

Sequential Write : 5.698 MB/s

Random Read 512KB : 12.852 MB/s

Random Write 512KB : 4.026 MB/s

Random Read 4KB (QD=1) : 1.018 MB/s [ 248.5 IOPS]

Random Write 4KB (QD=1) : 0.601 MB/s [ 146.7 IOPS]

Random Read 4KB (QD=32) : 0.904 MB/s [ 220.8 IOPS]

Random Write 4KB (QD=32) : 0.598 MB/s [ 145.9 IOPS]

Test : 50 MB [I: 0.0% (0.0/7565.2 MB)] (x9)

I noticed when I first put the new 'Stromboli' card in and ran just the QD=32 tests I got higher numbers. So I re-ran just those tests over and over and got the following:

Random Read 4KB (QD=32) : 1.422 MB/s [ 347.2 IOPS]

Random Write 4KB (QD=32) : 1.025 MB/s [ 250.1 IOPS]

Random Read 4KB (QD=32) : 1.332 MB/s [ 325.1 IOPS]

Random Write 4KB (QD=32) : 1.044 MB/s [ 254.8 IOPS]

Random Read 4KB (QD=32) : 1.341 MB/s [ 327.3 IOPS]

Random Write 4KB (QD=32) : 0.933 MB/s [ 227.8 IOPS]

So the card seems to score a little higher when only running the QD=32 tests without all the other tests in front of it. Just found that interesting and thought I would share.

Todd
[Nook Color General] rydo88:
My class 10 patriot card did all right, some FC's but no big deal. Speed wasn't that different. Now it gets used mostly as storage since it plays files off it better. I've got a couple of Sandisk class 4's that do most of the tinkering these days. I still think that rooted stock + launcher is the way to go. That way I've got my nook and my tab all in one package, no reboots, no muss, no fuss.
[Nook Color General] mrkkk:
I got my nook with cm7 on it from craigslist

I would like to try honeycomb, without messing with it

I am somewhat techie, and have rooted and cm7'ed my htc evo

so what would you guys recommend

buy a sandisk 8gb and put the image on it?
[Nook Color General] meehawl:
SanDisk 32GB CL4 Test

From "Blue Proton" on Amazon:

"SanDisk 32GB microSDHC Memory Card (Bulk Package)"

Currently $53.41 and quals for Prime.

Embossed with Class 4 Logo

Silkscreening too small to read SN/PN.

Packaging calls it:

SDSDQ-032G

Tested:

Win 7 x64, CrystalDiskMark 3.0.1 x64

Sequential Read : 10.25 MB/s

Sequential Write : 6.251 MB/s

Random Read 512KB : 9.938 MB/s

Random Write 512KB : 2.279 MB/s

Random Read 4KB (QD=1) : 2.156 MB/s

Random Write 4KB (QD=1) : 0.648 MB/s

Random Read 4KB (QD=32) : 2.163 MB/s

Random Write 4KB (QD=32) : 0.522 MB/s

Test : 50 MB (x9) Random Fill
[Nook Color General] ariot:
You may want to try phonemypc instead of logmein. I have phonemypc on my EVO and nook and it works perfectly. I paid $10 for it about a year ago. Not sure if it is still the same price. I also have logmein on my ipod touch, so I know the apps are comparable.
[Nook Color General] Blue6IX:
Much appreciated, I'm starting to get more free time again. Skimming this, i'll definitely have to read through it more thoroughly in the next few days.

disneygirl74:

I noticed that on your tests you are just testing the random read/write.

My focus on this issue has been test integrity, and i'll definitely say that running the full test vs. just testing one aspect yields different results.

I'd be willing to say, and others should chime in to the validity of this, that unless you run the full test you don't get an accurate result.

Try the tests on your cards again, running the full test instead, and see if there's a difference in the readout.

I'd like to see this hypothesis proven out one way or another, so if you're willing to play along a little further let me know how it turns out.

Over the next few weeks I have some events coming up that will eat into the tiny bit of free time I have, but after that my workload also looks like it'll be letting up too so I can get back to this issue.

I'll try to bounce in when I can.

ETA:

This thread has had a whole lot added to it while i've been busy with the obligations of my life out there.

Anyone else notice anything about this, one way or another? I don't know if I can catch it all going back through the thread on my limited time right now. Shout out if you can contribute to this thought.
[Nook Color General] neok44:
so after reading through this, my 16GB Class 10 Patriot card is going to run CM7 like crap, but if i go buy a class 2 card it'll run amazingly...
[Nook Color General] freonchill:
a class 2 or class 4 sandisk...
[Nook Color General] me3head:
A few cards tested with Xbench:

PNY 8GB Class 4:

Sequential	13.23

Uncached Write	9.47	5.81 MB/sec [4K blocks]

Uncached Write	12.86	7.28 MB/sec [256K blocks]

Uncached Read	12.71	3.72 MB/sec [4K blocks]

Uncached Read	24.84	12.49 MB/sec [256K blocks]

Random	0.36

Uncached Write	0.10	0.01 MB/sec [4K blocks]

Uncached Write	1.68	0.54 MB/sec [256K blocks]

Uncached Read	358.04	2.54 MB/sec [4K blocks]

Uncached Read	65.59	12.17 MB/sec [256K blocks]

Unknown brand 4GB Class 4:

Sequential	12.10

Uncached Write	6.59	4.04 MB/sec [4K blocks]

Uncached Write	13.35	7.56 MB/sec [256K blocks]

Uncached Read	13.11	3.84 MB/sec [4K blocks]

Uncached Read	36.03	18.11 MB/sec [256K blocks]

Random	1.02

Uncached Write	0.28	0.03 MB/sec [4K blocks]

Uncached Write	2.81	0.90 MB/sec [256K blocks]

Uncached Read	538.76	3.82 MB/sec [4K blocks]

Uncached Read	98.15	18.21 MB/sec [256K blocks]

Kingston 4GB Class 4: (shipped as boot disk with Beagle Board)

Sequential	7.95

Uncached Write	6.36	3.91 MB/sec [4K blocks]

Uncached Write	6.76	3.83 MB/sec [256K blocks]

Uncached Read	6.21	1.82 MB/sec [4K blocks]

Uncached Read	27.09	13.61 MB/sec [256K blocks]

Random	0.22

Uncached Write	0.06	0.01 MB/sec [4K blocks]

Uncached Write	0.99	0.32 MB/sec [256K blocks]

Uncached Read	220.22	1.56 MB/sec [4K blocks]

Uncached Read	73.16	13.57 MB/sec [256K blocks]

Samsung 8GB Class 2: (shipped with Evo 4G)

Sequential	1.88

Uncached Write	0.98	0.60 MB/sec [4K blocks]

Uncached Write	1.05	0.60 MB/sec [256K blocks]

Uncached Read	9.01	2.64 MB/sec [4K blocks]

Uncached Read	24.59	12.36 MB/sec [256K blocks]

Random	0.43

Uncached Write	0.13	0.01 MB/sec [4K blocks]

Uncached Write	0.68	0.22 MB/sec [256K blocks]

Uncached Read	241.53	1.71 MB/sec [4K blocks]

Uncached Read	64.11	11.90 MB/sec [256K blocks]

Looks like all my cards suck :-(
[Nook Color General] me3head:
And then there was SanDisk

Sandisk 8GB Class 4:

Sequential	12.96

Uncached Write	9.38	5.76 MB/sec [4K blocks]

Uncached Write	9.91	5.61 MB/sec [256K blocks]

Uncached Read	18.59	5.44 MB/sec [4K blocks]

Uncached Read	21.12	10.61 MB/sec [256K blocks]

Random	4.79

Uncached Write	12.85	1.36 MB/sec [4K blocks]

Uncached Write	1.36	0.44 MB/sec [256K blocks]

Uncached Read	382.52	2.71 MB/sec [4K blocks]

Uncached Read	50.92	9.45 MB/sec [256K blocks]
[Nook Color General] freonchill:
could you do those with crystal so we have an apples to apples comparison

(if you want to, no pressure)
[Nook Color General] gbohm:
hey i got myself some sd cards to compare but crystal bench mark is hanging on the last write test (q32 50mb)

i tested it with 32 bit and 64bit but to no avil...

i used an notebook with 64bit win 7 ultimate (core i7,ssd,4gb ram...)

normally i am a linux user but i want compareable results anyone got some suggestions to get it up and running?

thanks

sent from my droid (not the one you are looking for)
[Nook Color General] freonchill:
i would try another machine or adapter if the test is locking-up/failing...
[Nook Color General] Dudemeister:
I originally installed CM7 on a Patriot 4GB CL4 (Fry's electronics special), and the performance was choppy, especially during page transitions and animations and such. I then bought an Patriot 8GB CL10, and that was just as crappy, so in an attempt to find a solution, I came across this thread.

I found an 8GB CL2 card from SanDisk (I believe it came from my EVO 4G), and gave it a shot. The first thing I noticed was that boot time was cut in half (or so it seemed), and the performance at the "desktop" was much much faster.

So while I didn't do any benchmarks, I can vouch for the OP's findings.

Now a question: Is the Nook's on board memory any faster? Right now I still have the Nook software there, but I'm considering wiping it out and installing CM7. But if it's not any faster I'll leave it alone.
[Nook Color General] chedderslam:
From what I have read, the microsd should be faster. As such, there is no benefit to installing to the EMMC, and you also don't void your warranty.
[Nook Color General] freonchill:
i have not "benchmarked" the difference, but this guy says he has tried cm7 on both and noticed no noticeable speed difference
[Nook Color General] Blue6IX:
While I am a proponent for installing to MicroSD and not emmc, over time and use the emmc will end up being faster.

Some variables to take into account are:

Inserting/removing the MicroSD will wear the contacts, both of the card itself and the Nook.

Any dust or dirt that gets in the slot can impact speed and reliability.

Oils, grease, or other contaminants (touching those contacts with your fingers) will also negatively impact speed.

I'd also tend to believe that the internal BUS structure would yield a faster throughput for an emmc install then the MicroSD, but haven't looked into the teardown information to find the truth of this.

I still encourage people to install to the MicroSD rather then emmc, because for all the benefits it gives, it seems to be only a barely noticable speed difference, if any.

I am curious to know if the emmc or MicroSD is faster with fresh hardware, though.
[Nook Color General] Fairwayman:
Im stuck

have a new 8 gig sandisk class 4

dloaded img file, started to write to disk gets to 99% and says

Errror reading file C:\nookhoney04.img.zip

also tried two other img files same thing--formatted card--tried agan--no joy

using winimage in admin mode---HELP
[Nook Color General] Dudemeister:
I don't plan on removing the MicroSD card from the system if I'm going to primarily use CM7, so the MTBF as it relates to insertions and possible mechanical failure will probably not have much of an impact in my case.

BUt I have just thought of something that might be a reason to install to the EMMC after all: WEAR LEVELING

I don't know whether Android (CM7 in particular) uses embedded OS like technologies the same way Windows embedded does. That is using an overlay layer like the Enhanced Write Filter (EWF) in order to extend the life of the flash and reduce the write cycles. I assume though that since Android was developed for mobile devices, it probably does.

At the same time I'm sure it a also assumes that the device's built in flash, has some form of wear leveling built in, so that it can extended the life of the flash.

As far as I know MicroSD doesn't have any wear leveling, so they will probably "wear out" much faster than the emmc which more than likely does have some wear leveling algorithms built into it.

Can anyone shed some light on this subject?

Edit: I just found this post regarding MicroSD wear leveling, and it appears that while thy do have it, it's mostly FAT partition centric, and it doesn't work well on journaled partitions like ext3 which Android uses.
[Nook Color General] Blue6IX:
If that info is correct, it could help explain why some cards tend to fail more quickly then others.

Running the OS from the MicroSD card means that we will put the card through it's paces in way's that the average user would never do. You could think of us as all one big test group, and we are discovering some interesting things.

Thanks for mentioning that, and dragging up the link to drop in here. Everything we get adds to the total picture.

Now that I have a specific card i'm using for my primary Android OS on the Nook Color, we'll see how long it takes to fail.
[Nook Color General] adverbius:
For reference, (and possibly as a learning tool): I originally installed CM7 on a SanDisk 16GB C2 uSD. However, after struggling with system lockups, FC, and general unwieldiness of the OS, I decided to dig a little deeper into the issues to see what I could figure out. I switched to a Kingston 4GB C4 card, thinking that the higher class (and "speed") card would be an obvious improvement, and found the results to be satisfactory. Not excellent, but the NC was running noticeably smoother. Then I found this thread - read beginning to end. Based on what others have found, the card I was using should have been more than adequate - exceptional, even. And there was no reason the Kingston would outperform. So, with CDM 3.0.1 installed, I found this:

SanDisk 16GB C2 microSD

-----------------------------------------------------------------------
CrystalDiskMark 3.0.1 x64 (C) 2007-2010 hiyohiyo

-----------------------------------------------------------------------
* MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s]

Sequential Read : 20.844 MB/s
Sequential Write : 6.112 MB/s
Random Read 512KB : 20.470 MB/s
Random Write 512KB : 1.318 MB/s
Random Read 4KB (QD=1) : 4.669 MB/s [ 1139.8 IOPS]
[B]Random Write 4KB (QD=1) : 0.013 MB/s [ 3.1 IOPS][/B]
Random Read 4KB (QD=32) : 4.638 MB/s [ 1132.4 IOPS]
[B]Random Write 4KB (QD=32) : 0.021 MB/s [ 5.2 IOPS][/B]

Test : 50 MB [H: 10.0% (11.6/115.8 MB)] (x5)
Date : 2011/07/23 13:39:49
OS : Windows 7 SP1 [6.1 Build 7601] (x64)

So. The story goes that I purchased this uSD from a deal-a-day site which sold it inexpensively in bulk packaging. I find it hard to pass on a really good deal, so I bit, knowing the risks. The card arrived in true bulk fashion - alone, in a bubble mailer. No holder, no adapters. Now, don't get me wrong, the card works, is the right size, and is compatible with everything I've tried it in, so I can't complain. But it won't work very well in the NC - not as a boot disk, at least. All this to say that not all uSD are created equal, and even tho the cards may be good quality, they may not meet the needs of this community.

I recently ordered a replacement from what I hope is a more reputable seller. ;) I'll let you know...

Oh, and THANKS to everyone who has contributed (and continues to contribute) to this site and the info offered.
[Nook Color General] Fairwayman:
FIXED:

used 2 dif sandisk adapters--one worked--lol--now point me on how to install nook app
[Nook Color General] Dudemeister:
If you're referring to the Nook reader for Android, then simply download it and install it from the Market.
[Nook Color General] Fairwayman:
ok, i have to put .apk file sd on tonight, thanks

made another card sandisck 8 gig class 4--further reading led me to resizing 117meg boot partition to 1.75 gig --worked like a charm--cm7 encore RC1/gapps
[Nook Color General] gvarv:
Sandisk CL4 16GB bought from iFlash inc Amazon

-----------------------------------------------------------------------

CrystalDiskMark 3.0.1 x64 (C) 2007-2010 hiyohiyo

Crystal Dew World : http://crystalmark.info/

-----------------------------------------------------------------------

* MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s]

Sequential Read : 10.411 MB/s

Sequential Write : 5.422 MB/s

Random Read 512KB : 10.295 MB/s

Random Write 512KB : 1.629 MB/s

Random Read 4KB (QD=1) : 2.533 MB/s [ 618.5 IOPS]

Random Write 4KB (QD=1) : 0.617 MB/s [ 150.5 IOPS]

Random Read 4KB (QD=32) : 2.978 MB/s [ 727.0 IOPS]

Random Write 4KB (QD=32) : 0.548 MB/s [ 133.8 IOPS]

Test : 50 MB [G: 0.0% (0.0/14.8 GB)] (x5)

Date : 2011/07/26 17:07:17

OS : Windows 7 SP1 [6.1 Build 7601] (x64)

Cheap USB adapter in an USB2 port Sony Vaio laptop

Thanks for an informative thread!